Unused space for travel memoranda.

From p. 98-110 of The Iron and Steel Interests of Chicago, by George W. Cope (1800). [Here]

In Chicago? Check out the forthcoming show FOLDED: Absurd Machines, Novel Topographies, Hybrid Creatures and Impossible Vistas, curated by Krissy Wilson of The Art of Google Books, at The Meadow, in Chicago, IL, between November 5th and 15th.

Medical diagrams left folded through digitization, creating some mutant, multi- or non-functioning organs. 

From various pages of The Philosophical Transactions and Collections to the End of the Year MDCC, Abridged, and Disposed under General Heads, v. 3, ed. John Lowthorp (1749). [Here]

For more like this, check out the forthcoming show FOLDED: Absurd Machines, Novel Topographies, Hybrid Creatures and Impossible Vistas, curated by Krissy Wilson of The Art of Google Books, at The Meadow, in Chicago, IL, between November 5th and 15th.